Abstract
Dielectric properties of pure phase BaTi0.99(Nb0.5Ga0.5)0.02O3 ceramics, prepared via a conventional solid-state method, have been studied in the frequency range 0.01Hz–10MHz, at temperatures −130°C to 200°C. Colossal dielectric constant, εr~2×105, and low dielectric loss, tanδ~0.05 at 1kHz have been obtained. The permittivity showed weak frequency dependency in a broad range of frequency from 1Hz to 30kHz and less than ±20% capacitance deviation over the temperature range from 243 to 358K. The AC impedance spectroscopy analysis indicated three relaxation mechanisms, the electrode interfacial polarization, internal barrier layer capacitor effect and hopping polaron polarization contributed to the colossal dielectric constant.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
